Which cement is more costly, GPC or PPC?
PCC – what Plain Cement Concrete is called – typically costs less than GPC – General Purpose Cement. The difference in cost plays a huger part in pricing jobs and commercial concreting projects, and why PPC is the most commonly used form of concrete.
What is the minimum thickness for concrete?
Concrete can be poured as thin as 2 inches. Unless the project requires a very thin concrete layer, as concrete will always have more strength and durability if it’s poured thicker. Areas like pathways and walkways or letterbox platforms are where thinner concrete could be used.
Where is waffle slab used?
In large projects that have wide spans, or in areas that need to have less supporting columns, then a waffle slab is typically used. They can either be for the ceiling or floor slab, to give it much more support, as they use beams that criss-cross and look just like a waffle when constructed.
What is a raft slab?
In the foundations of home extensions or new houses, is where raft slabs are used. Heavy duty concrete beams get put down along with steel reinforcing, to go in both directions. This adds extra strength to a new slab, when the main pour is done, giving your house or garage floor stability and durability.
How thick is a concrete floor slab?
The standard thickness for a garage floor slab is 4 inches. In areas where large trucks, caravans or other vehicles will be driven or parked, it’s recommended to go up to 5 or even 6 inches in thickness.
Which grade of concrete is used for floor slab?
In house and garage slabs, beddings or footings, it’s common in the concrete industry to use m10 or m15 grade concrete. M20, which is the next strongest grade, is usually for reinforced steel concrete pours – things like foundation slabs, supporting columns or beams.
What does m25 mean for concrete?
It means a particular grade of concrete, that is has been left to cure for a full 2When concrete has been able to cure for a set amount of time – 28 days – it will be 100% cured and set. As a result it will have the compression strength of 25 N/mm, and where […]
What is a concrete worker called?
A concrete worker can also be referred to as a “concreter finisher” – but there is a difference. A finisher is someone that levels and smooths out concrete surfaces, does stamping or stenciling. A concreter is usually someone that does the main supply and pumping of concrete. Visit: https://www.concreterssydney.net.au
Should you cover concrete with plastic in cold weather?
When concrete is freshly poured, it will need to be protected if there is any hail, snow or rain predicted. When a plastic covering is placed over the concrete, the concreter needs to be especially careful that it is not put straight over the surface. If plastic touches curing concrete it can permanently discolour or […]
What happens if curing is not done?
If concrete is not allowed to cure properly, it will be weak, crack or collapse when heavy loads go over it. If curing is done correctly then the concrete laid will be stable, strong and resist cracking even under heavy loads. It is crucial that no matter how small a concreting job is, that time […]
